Oil burner



Oct. 27, 1931. L. T. wlLcox 1,829,027

OIL BURNER Filed Oct. 12, 1929 Z I, j 5

INVENTOR ATTORNEY Patented Oct. 27, 1931 v UNITED. siTArEsf PATENT OFFICE LEwIs 1'. wILcOx, or PEEKsKILIQ, NEW YORK, ASSIGNOB .TO vwILcOx PATENTS con- 7 PORA'I'ION, A CORPORATION OF NEW YORK OIL BURNER Application filed October 12, 1929. Serial NO. 399,153.:

In oil burnin stoves in which the oil sup 1y pipe runs horizontally underneath the urners, the connection between a burner and the supply pipe is commonly an elbow and @nipple connection, theelbow bein attached to the side of the burner shel and either being recessed in its downwardly opening outer end to fit over a nipple in the.

pipe, the parts of :the joint being suitably 1o clamped together, or having a short pipe length extending down from its outer end and coupled to a nipple in the pipe by a packing nut. The latter construction, which is shown, for example, in the Homan Patent 16 Number 1,700,764, has the merit of being adjustable in its length and consequently ,al-

ways adaptable to an upright position of the urner.

The elbows have been castmembers and- 20 their bases have been curved to conform to the the shell I form a flattened boss and the base 1 fits on this boss with the flange extending through the opening inthe shell wall and spun or turned out over the inside of the wall around the opening, being finally soldered to make the joint absolutely tight. The elbow itself is symmetrical about its axis 40 throughout its length and has an axial and a lateral bore forming an elbow passage. It

therefore lends itself to turning instead of casting and is consequently much cheaper to produce.

The elbow is completed by a short tube which fits in the lateral bore of the body member and is suitably secured therein and which has a lateral opening registering with the axial bore in the body member. The packing nipple and nut make this'elbow tube an extension joint 'for quickly releasable connection with the, supply pipe, and a simple, in-

expensive and altogether satisfactory-elbow construction is thus provided.

Fig. 1 is a sectional elevation of the lower portion of a burner and of a short section of supply pipe with an elbow connection between the two embodying my invention; Fig. 2 is an'end elevation of the same;

Fig. 3 isa'detail of the several parts of the connection disassembled;

Fig. 4' is an enlarged fragmentary section of the elbow and immediate portion of the burner shell. p I

The burner shell 1 is of the, usual double wall type with a wick-and wick holder 21 longitudinally movable in the space between bottom of the burner, being flattened on its upper side, as shown, to form a seat for the burner. In this case the burner, therefore,

sits directly upon'thesupply pipe, although the walls. The supply pipe 3 runs across the H it will be understood that that feature is optional and thata separate burner base with a burner seat may be employedif desired. The burner maybe held on its seat in any suitable way. In the construction shown it is hooked upon'the pipe 3 bymeans of a' resilient wire hook or bale member 4 which depends'from the'inside of the burner and is so constituted that when it is latched it holdsthe burneron its seat under spring tension.

The elbow and slip-joint connection between the burner and the supply pipe consists of an elbow body member .5, a short pipe 6, a packing nut 7 .and a threadednipple 8. A round opening'is formed in the outer wall of the burner shell 1 and about this opening the metal is pressed out to form a flat boss 1a.

The body member 5 of the elbow has no Offset month portion at its outer end as is usual with Z cast elbow members so as to provideja sulficiently long bearing forthe tube. Instead the body member 5 is symmetrical throughout its length with respect to its longitudinal axis. In practice I make this body member by turning from abrass rod. It has a base portion and anout er head portion'connected to the base by a somewhat reduced neck portion. The base 5a is fiat on its underside and has within its periphery a concentric axially extending flange 5b of a size to fit accurately within the opening in the boss 1a. Within the flange 5b the base is formed with a tapered or conical recess which is continued into an axial bore 50 and this bore at its outer end communicates with a lateral bore 5d in the head of the elbow member 5.

The short tube section 6 of the elbow is of a size to fit accurately into the lateral bore 5d and it is soldered therein as shown. The tube extends to the bottom of the axial bore and thus gets a good bearing in the head portion of the body member in spite of the factthat there is no lateral extension on the elbow member 5 to receive the tube. A lateral hole 6a at the inner end of the tube 6 communigates with the axial bore 50 in the body mem- The elbow is attached to the boss 1a by spinning the flange 56 down against the inner face of the boss and then soldering the joint. The joint thus produced is tight and strong and while it is equally as sightly as is the curved seat of the usual cast elbow connection, it is much simpler and quicker to assemble. It will be understood that while the soldered oint is on the inside of the shell the oil always stands above the level of this joint and therefore keeps it suificiently cool to avoid the melting of the solder. The flange permits the joint tobe drawn tight all the way around whereas the construction in which the base is riveted to the outer face of the shell wall necessitates more dependence upon the solder for the strength and tightness of the joint. Manifestly, also, the fact that the elbow member 5 can be turned gives it a decided advantage in the matter of cost over an elbow member of irregular shape which requires casting.

V The elbow is attached to the pipe 3 by means of a nipple 8 which is tapped into the pipe and secured therein in any suitable way,

as by screw threads, and which receives the lower end of the tube 6 with a sliding fit. The upper end of the nipple 8 is externally screw threaded and the packing nut 7 fits over the tube 6 and screws on the nipple 8, thus making the slip-joint absolutely tight. This adjustability of the connection is of great conven ience in assembling the burner on the supply pipe. The pipe 6 is entered in the nipple 8 and the burner is brought down accurately on its seat in an upright position and the bale 4 is then latched on to the pipe. Lastly, the packing nut 7 is turned down.

It isobvious that various modifications may be made in the construction shown in the drawings and above particularly described within the principle and scope of my invention.

I claim:

Connecting means for joining a fuel pipe to an oil burner comprising afitting adapted my signature.

' LEWIS T. WILCOX. 

